Twyn Ddisgwylfa Settlement
This settlement is also known as Buarth Maen and it is found a little way to the west of the summit of the mountain between Aberdare and Merthyr (SO 0126 0530). The two masts that crown the summit can be seen from all over Aberdare. The settlement has been damaged slightly by opencast mining. Found on sloping ground from north to south are three enclosures, lengths of wall, huts and mounds of stones. The ruins are well preserved but in some places the walls are incomplete. To the west of the southern enclosure is a cairn. The enclosure walls are 0.6m high and 1.8m wide, the huts are 1.2m wide and 0.3m high and range from 2.5m up to 6m in diameter. The dating of this settlement is uncertain, it is possible that these huts and enclosures were occupied from the Iron Age (600 BC – AD 100) to the Dark Age (AD 410 – 871). There are 15 – 18 huts and two rectangular huts within the settlement.
Ref. Royal Commission on Ancient and Historical Monuments in Wales : Glamorgan Vol.1 Part 2, The Iron Age and the Roman Occupation. 1976. Page 78
CADW Scheduled Ancient Monument Record : GM401(RCT) Hut Circles & Enclosures on Buarth Maen. (Report).